Obviously if you know your application doesn't need the Publisher evidence, you won't want to pay the cost of having the signature verified. If you download the Orcas Beta 1 bits, you'll be able to take advantage of a feature in the runtime that disables this signature verification. Your application can now opt out of Authenticode signature verification; which will mean that time to load each assembly will improve (therefore leading to an improvement in startup time if your entry point assembly has an Authenticode signature). The tradeoff of course is that assemblies will no longer receive Publisher evidence or PublisherIdentityPermission. Applications which wish to take advantage of this can add the following line to their .exe.config file:

<configuration>

<runtime>

<generatePublisherEvidenceenabled="false"/>

</runtime>

</configuration>

Which will prevent the CLR from verifying the Authenticode signatures of any assembly loaded by the application.